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Add 81/7 and 30/45

1st number: 11 4/7, 2nd number: 30/45

81/7 + 30/45 is 257/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 7 × 45 = 315,
    81/7 = 81 × 45/7 × 45 = 3645/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    30/45 = 30 × 7/45 × 7 = 210/315
  4. Add the two like fractions:
    3645/315 + 210/315 = 3645 + 210/315 = 3855/315
  5. 3855/315 simplified gives 257/21
  6. So, 81/7 + 30/45 = 257/21
    In mixed form: 125/21

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